Convert Image 2 byte array and then ....
Hi all,
i am try 2build program like windos remot control that allowed u to watch on anther user desktop.
for that i need 2 send a lot ImageCapture of the Desktop
to capture the screen of the Desktop i do like that :
BufferedImage screencapture = new Robot().createScreenCapture(
new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()) );
now i need to send this Capture code from the server 2 the Claint
and for sending Images i need convert them 2 Bytes
and this i do like that:
int[] pix = new int[screencapture.getWidth(null) *
screencapture.getHeight(null) ];
for(int j=0;j<screencapture.getHeight(null); j++)
for(int i=0;i<screencapture.getWidth(null); i++)
pix[i*j]=screencapture.getRGB(i,j);
as u can see now i gotint array of the Image ( or not ? )
now i convert this int arry to byte array like that
byte[] matrix= (new Converts()).convertIntArray2ByteArray(pix);
Converts is a Class that i build have a lot method of Converts
1 of the Method is "convertintArray2ByteArry"
this method get int array and return byte array here the code:
public byte[] convertIntArray2ByteArray(int pix[])
{
byte[ ] pixels =new byte [ pix.length *4];
for( int j= 0 ; j >< pix.length ; j++ )
{
pixels[4*j]= (byte)(pix[j]);
pixels[4*j + 1] = (byte)(pix[j] << 8);
pixels[4*j + 2] = (byte)(pix[j] << 16);
pixels[4*j + 3] = (byte)(pix[j] << 24);
}
return pixels;
}
after all this story i guss i got byte array from the CaptureImage.
( like printscreen that i capture the image)
and after all the converts ( BufferImage>Int Array > Byte Array)
i will have 2 send it to anther PC ( Claint) and 2 draw it
but lets say i send it now i got this Byte array in the other PC
and i want save it as JPG file so i do like that :
( matrix is the name of the Byte arrayf \ the image so i need 2 convert
him back 2 image and save it 2 file look how i do in the following code )
Image image= Toolkit.getDefaultToolkit().createImage(matrix);
i use Java Toolkit to creat image from the array byte
now i need 2 convert the image 2 BuffImage for save it 2 file i do like that
BufferedImage bi = Converts.convert(image);
"Converts.convert(image)" is a method in my class that i build
the Method going like that :
public static BufferedImage convert(Image im)
{
int imgHeight=im.getHeight(null);
int imgWidth= im.getWidth(null) ;
BufferedImage bi = new BufferedImage( 1024 , 768 , BufferedImage.TYPE_INT_RGB);
Graphics bg = bi.getGraphics();
bg.drawImage(im, 0, 0, null);
bg.dispose();
return bi;
}
and now only need save to a file like that :
File file1 = new File("im121ag.jpg");
ImageIO.write(bi,"jpg",file1);
ok that all the story now i say what is tMY problem
when i go and open the JPG File that i have been Create
its Show Picture of Black Screen ;((
and i dont know why ;-(
if some 1 know where i mistake in my code or if i missed somthing
or have short code or any Advise i will Glad 2 hear TY ALL
